서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

Expression Profiles of Retinoblastoma Protein and p27Kip1 According to HER2 Amplification Status in Primary Breast Cancer

신재호,Sung-Jin Park,Hyun-Jin Cho,Geumhee Gwak,Byung-Noe Bae,Ki Whan Kim,Hong-Yong Kim2,Kyeongmee Park,Sehwan Han 한국유방암학회 2009 Journal of breast cancer Vol.12 No.1

Purpose: Human epidermal growth factor receptor-2 (HER-2)/neu amplification affects the cell proliferation through the modulation of multiple G1 cell cycle regulators in breast tumor cells. We performed this study to investigate whether retinoblastoma protein (pRB) and p27Kip1 were differently expressed according to the HER2 amplification status in human breast cancer. Methods: HER2 amplification was assayed by fluorescence in situ hybridization and the expression of cell cycle regulators were assayed by immunohistochemistry on 153 consecutive invasive breast cancers. The proliferative activity of breast cancer was analyzed according to the HER2 amplification and cell cycle protein expression status. Results: HER2 amplification was observed in 39 (25.5%) of 153 breast cancers. In the HER2 amplified breast cancers, the pRB expression was significantly increased (p=0.011) whereas there was no significant relationship between HER2 amplification and p27Kip1 expression. There was an inverse correlation between pRB expression and Ki-67 labeling index in the HER2 amplified breast cancers (p=0.036). In contrast, Ki67 labeling index was significantly decreased as p27Kip1 expression increased in HER2 non-amplified breast cancers (p=0.028). In HER2 non-amplified breast cancers, we could not observe any association between the pRB expression and Ki67 labeling index. Conclusion: The proliferation of the breast cancers was associated with pRB expression in HER2 amplified tumors whereas it was associated with p27Kip1 expression in HER2 non-amplified tumors. The results of the current study indicate that the cell proliferative activity of the breast cancer is under different growth signal pathways according to HER2 amplification status.

정신분열병에 대한 리스페리돈의 효과 및 안정성

이민수,김용구,김영훈,연병길,오병훈,윤도준,윤진상,이철,정희연,강병조,김광수,김동언,김명정,김상훈,김희철,나철,노승호,민경준,박기창,박두병,백기청,백인호,손봉기,손진욱,양병환,양창국,우행원,이정호,이종범,이홍식,임기영,전태연,정영조,정영철,정인과,정인원,지익성,채정호,한상익,한선호,한진희,서광윤 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1

연구목적 : 본 시험의 목적은 임상시험 시작전에 연구자들을 대상으로 PANSS Workshop을 통하여 PANSS, ESRS에 대한 국내에서의 표준화 작업을 구축하고 새로운 정신병 치료제인 리스페리돈의 효과와 안정성을 재확인하여 리스페리돈 사용에 대한 적정화를 이루는데 있다. 연구방법 : 1996년 4월부터 1996년 9월까지 국내 39개 대학병원 정신과에 입원중인 혹은 증상이 악화되어 입원하는 정신분열병 환자 377명을 대상으로 다시설 개방 연구를 시행하였다. 1주일간의 약물 배설기간을 가진후, 리스페리돈을 8주간 투여하였고, 기준점, 1주, 2주, 4주, 그리고 8주후에 평가되었다. 용량은 제1일에는 리스페리돈 1mg씩 1일 2회, 제2일에는 2mg씩 1일 2회, 제3∼7일에는 3mg씩 1일 2회 투여하였다. 이후 환자의 임상상태에 따라 임의로 증량할 수 있으며, 최대 일일 16mg을 초과하지 않도록 하였다. 추체외로 증상을 조절하기 위한 투약을 허용하였다. 임상증상 및 부작용의 평가는 PANSS(Positive and Negative Syndrome Scale), CGI(Clinical Global Impression) 그리고 ESRS(Extrapyramidal Symptom Rating Scale)을 사용하였다. 연구결과 : 377명중 343명(91%)이 8주간의 연구를 완결하였다. 치료 종결시점인 8주후 PANSS 총점수가 20% 이상 호전된 경우를 약물 반응군으로 정의할때, 약물반응군은 81.3%였다. 리스페리돈에 반응하는 예측인자로는 발병연령, 이전의 입원 횟수, 유병기간이 관련 있었다. 리스페리돈은 1주후부터 PANSS양성, 음성, 및 일반정신병리 점수상에 유의한 호전을 보여 효과가 빨랐다. CGI의 경우도 기준점에 비해 1주후부터 유의한 감소를 나타내었다. ESRS의 경우, 파킨슨 평가점수는 기준점과 비교해 투여 1주, 2주, 4주후 유의하게 증가되었다가 8주후 기준점과 차이가 없었다. Dystonia 평가점수는 1주후만 유의한 증가를 보였으며, dyskinesia 평가점수는 유의한 차이가 없었다. 혈압, 맥박수의 생명징후 및 일반 혈액학 검사, 생화학적 검사, 심전도 검사에서 유의한 변화는 없었다. 결 론 : 이상의 다시설 개방 임상 연구를 통해 리스페리돈은 정신분열병 환자에서 양성증상뿐만 아니라 음성증상 및 전반적인 증상에도 효과적인 것으로 사료된다. 보다 명확한 평가를 위해서는 다른 항정신병약물과의 이중맹검 연구가 필요할 것으로 생각되며, 또한 장기적 치료에 대한 평가도 함께 이루어져야 하겠다. Objective : The purpose of this study was to investigate the efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Method : This multicenter open study included 377 schizophrenic patients drawn from 39 university hospitals. After a wash-out period of 1 week, the schizophrenic patients were treated with risperidone for 8 weeks and evaluated at 5 points ; at baseline, and 1, 2, 4 and 8 weeks of treatment. The dose was increased from 2mg/day(1mg twice daily) to 6mg/day(3mg twice daily) during the first week and adjusted to a maximum of 16mg/day over the next 7 weeks according to the patient's clinical response. Medication to control extrapyramidal symptoms was permitted. The psychiatric and neurological status of the patients was assessed by PANSS, CGI, and ESRS scales. Results : 343(91%) of 377 patients completed the 8-week trial period. Clinical improvement, as defined by a 20% or more reduction in total PANSS score at end point, was shown by 81.3% of patients. The predictors of response to risperidone were associated older age, shorter duration of illness, fewer previous hospitalization. Risperidone had rapid onset of action ; a significant decrease of the total PANSS and three PANSS factor(positive, negative, general), and CGI was already noticed at the end of first week. For the ESRS, parkinsonism rating scores were significantly increased until week 4 comparing with baseline. Dystonia rating scores were significantly increased until week 1, and dyskinesia rating scores were not significantly changed during the study. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial. Conclusions : This study suggests that risperidone is generally safe and effective against both the positive and negative symptoms in our group of patients.

연접 부호화 기법에 의한 무선 ATM의 성능 개선

조성언,박기식,홍희식 順天大學校 1999 論文集 Vol.18 No.1

In this paper, we have analyzed and simulated the BER and CLP of Wireless ATM(WATM) cells adopting the concatenated FEC technique in Rician fading channel. Also, in Rician fading channel, we have contrived the performance improvement by introducing the fading compensation technique of inserting pilot symbols into the concatenated FEC. From the results, in Rician fading channel, it is known that since the superior BER performance in low ?? results in the divergence when the Viterbi decoder is conducted first, the performance difference of about 2 [dB] occurs between the theory analysis and the simulation. Besides, from the only simulation results, it is known that the system performance adopting the concatenated FEC technique by inserting pilot symbols is improved about 1 [dB] better in terms of ?? than the system performance adopting the only concatenated FEC technique.

폐결핵 환자의 우울 상태

홍정표,최선희,조만종,이성주,박종,김기순,김양옥 朝鮮大學校 附設 醫學硏究所 1997 The Medical Journal of Chosun University Vol.22 No.1

The main purpose of this study is to identify and evaluate the depressive states for the patients with chronic pulmonary tuberculosis. A questionnaire(Self-rating Depression Scale, SDS) survey was performed toward 57 pulmonary tuberculosis patients with initial treatment who started chemotherapy and 53 pulmonary tuberculosis patients with retreatment, admitted to one tuberculosis-centered hospital and two general hospital. Fifty three healthy persons as control group were investigated with the same questionnaire for comparison. The survey was performed from July to August 1996. The results are as follws : 1. The patients had significantly high scores in the depression than control and the patient with retreatment showed significantly high scores in the depression than the patient with initia1treatment(P<0.01). 2. The depressive levels of the patients were associated with duration of admission and the expectancy of recovery (P<0.05). 3. The percentage of the subjects with 40 or more scores tentatively classifiable as psychologically depressed was 67.1% of the total subjects, 48.4% of the control groups, 75.0% of the patient with initial treatment and 84.1% of the patient with retreatment. Because patient with pulmonary tuberculosis with initial treatment showed higher depression scores than normal persons, and patients with retreatment due to failure of initial treatment showed higher depression scores than initial treatment, it is necessary to give attention to depression of the patients during treatment of pulmonary tuberculosis.

축대칭 왕복엔진의 비정상 난류 유동에 대한 수치 해석

조진행,유홍선,최영기 중앙대학교 생산공학연구소 1992 생산공학연구소 논문집 Vol.1 No.2

A numerical simulation of unsteady axisymmetric turbulent flow was performed for a reciprocating engine including port/valve assembly. The governing equations based on a non-orthogonal coordinate formulation with Cartesian velocity components were used and discretised by the finite volume method with non-staggered variable arrangements. The modified k-ε turbulence model which included the effect of compressibility was used. The results of two-dimensional transient calculation for the axisymmetric configuration were compared with the experimental data. Although slightly low rms velocity was predicted compared to the experimental data, predicted velocity distributions at the valve exit and in-cylinder region showed good agreements with the experimental data. The flow at the valve exit was separated at the same valve lift position with experimental data. The mean flow pattern at the valve exit was found to be more sensitive to valve lift than mass flow rate or valve motion. Two vortices in-cylinder region were generated during the initial intake process. The clockwise main vortex became strong and moved upward to the top wall. The counter-clockwise second vortex became weak and stick to the upper left corner of the cylinder. After middle intake process, new vortex adjacent to upper cylinder wall appeared by the piston motion and therefore, the in-cylinder flow was formed into three vortices. The cylinder pressure just before bottom dead center of piston was higher than inlet pressure and then the reverse flow occured at the valve exit. The in-cylinder flow characteristics were strongly dependent on piston motion, but insensitive to valve motion.

야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로

조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6

Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.

인삼 Saponin이 상악동암 배양세포에 미치는 영향

조중생,차창일,안회영,홍남표,유기원 경희대학교 1992 慶熙醫學 Vol.8 No.4

極相林土壤과 土壞微生物의 分布

趙洪範,이기성,崔榮吉 漢陽大學校 環境科學硏究所 1985 環境科學論文集 Vol.6 No.-

경기도 광릉의 주엽산 일대의 삼림토양을 대상으로 5개의 정점을 설정하여 토양의 환경요인과 토양미생물의 군집규모를 조사하여 토양미생물의 토양생태계內의 기능을 토양의 환경요인과 상호 관련지어 해석하는 한편, 미생물의 개체군증식에 미치는 환경요인을 규명하는 미생물 생태학적인 연구를 실시하였다. 그리고 S/O value와 섬유소 분해 미생물 군집 크기 사이의 상관지수를 구하여, 토양생태계 內의 구조 및 기능 해석을 위한 새로운 biological index로서 S/O value가 적용 가능한 지를 조사하였다. 그 연구결과를 요약하면 다음과 같다. 1. 토양미생물의 군집 규모는 상층이 하층토양에 비하여 컸다. 또 토양미생물 군집의 규모를 세가지 유형으로 구분할 때, 일반세균>방선균류>일반균류의 순으로 군집의 크기가 확인되었으며 토양 內의 유기물 분해에 기여하는 작용도에 있어서도 그 순위가 동일하였다. 섬유소 분해능을 지닌 미생물 군집의 비율은 일반세균의 경우 75.8%, 방선균류는 81.2%, 일반균류는 54.5% 정도가 되어 매우 높았다. 한편 세균류와 균류의 개체군 규모는 3:1의 비를 나타내었다. 2. 실험대상지역의 토양 pH는 5.2∼5.7범위였으며, 토양 온도 및 무기이온의 함량은 일반적으로 상층이 높은 값을 나타내었으나 함수량은 하층이 높은 값을 보였다. 환경요인중 개체군 증식에 기여하는 영향이 가장 큰 parameter는 pH로 추정되었는데, 함수량, ??이온의 함량도 어느정도 영향력을 미치는 것으로 추정되었다. 3. 환경요인의 분석에서 수용성 당류, 아미노산의 함량은 상층이 하층에 비해 높았으나 총 유기물함량은 수직적으로나 정점별로도 유의한 차이는 없었다. 4. S/O value는 개체군 규모가 클수록 높았다. S/O value와 섬유소 분해 미생물 군집의 크기 사이의 상관지수는, S/O value와 총 섬유소 분해 미생물 사이에서 0.769, 일반 섬유소 분해 세균과의 경우 0.700, 방선균류 0.788, 일반균류는 0.576으로 나타나, 상당히 유의한 상관관계가 있었다. 5. 토양의 textile을 예견할 수 있는 균사체 발달 정도는 천이과정 중의 정점에서, 극상단계에 거의 도달한 정점에 비하여 양호하였다. 6. 실험대상지역의 토양생태계는 생물군집 중 미생물 군집의 규모 수준에서 고찰해 볼 때 극상단계에 도달한 것으로 판단된 정점도 실질적으로 아직 천이과정 중인 생태계로 판명되었다. The authors surveyed around Mt. Choo Yub in Kwang Reung on April 14th in 1983 and examined both environmental factors and microbial population size including the cellulolytic microbes in soil. In order to elucidate the relationship between soil environmental factors and the function of soil microbes in the soil, and to examine the environmental factors affecting to the microbial population size, this research was carried out. And calculated the correlation coefficients between S/O value and population size of cellulolytic microbes, S/O value was examined to be applied as new biological index for analysis of structure and function in soil ecosystem. The results of this experiment are summarized as follows. (1) The population size of soil microorgasms in surface layer was larger than that of lower layer. Subdivided the microbial community in the soil into three groups such as general bacteria, actinomycetes and general fungi, the population sizes and the activity in degradation of organic substances were large in order of general bacteria, actinomycetes and general fungi, respectively. Composition of cellulolytic microbes in subdivided microbial group was high as much as 75% in bacteria, 81.2% in actinomycetes and as 54.5% in fungi. The ratio of bacteria to fungi was 3:1. (2) PH value of the experimental soil was generally the range of 5.2∼5.7, the temperature of surface layer was higher about 5℃than that of lower layer. The amounts of inorganic components such as ??, ??, ??, ??, ?? were more accumulated in surface soil than those of lower layer. It is postulated that the parameter affecting strongly to the population size is pH among the various environmental factors. In addition, the moisture content and the amount of ?? were also related with the population size of soil microbes, to some extent. (3) In the analysis of organic substances such as free amino acid, soluble sugar and total organic matter, the amount of free amino acid and soluble sugar in surface layer were higher than those of lower later, but the amount of total organic matter has no significance in the sense of amounts between surface layer and lower layer. (4) The S/O value(amount of soluble sugar/amount of total organic matter) in soil was high in accordance with increase of the population size. And the correlation coefficients between S/O ratio and population size of cellulolytic microbes were shown such as 0.769, 0.700, 0.788, 0.576 respectively, in total cellulolytic population size, general bacteria, actinomycetes and general fungi. That is to say, it is significantly correlated between S/O ratio and population size of cellulolytic microbes. It was considered that S/O value can be adapted as a useful biological index for interpretation of the function and structure in soil ecosystem. (5) Mycelial extension to predict the textile of soil is more active in successional ecosystem than in the almost matured climax ecosystem. (6) The ecosystem of experimental area referring to the level of microbial population size experimental area is actually postulated successional ecosystem.

두개경추이행부 병변 및 환축추탈구에 대한 경구적 접근법

조기홍,조경기,정남 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.11

Although the operation for the ventral lesion of craniovertebral junction and atlantoaxial area is considered difficult to perform. the transoral approach made it safer and easier The authors report 10 cases(9 patients) treated by the transoral approach for the lesion of craniovertebral juncion over the past 13 years at the Ajou University Hospital and the Presbyterian Medical Center. Of these 10 cases, there were 4 odontoid type Ⅱ fractures, 1 atlantoaxial dislocation, 1 as odontoideum. 1 chordoma at lower clival area, 1 rheumatoid arthritis. 1 epidural abscess and 1 wound revision due to slippage of grafted bone after clivoaxial fusion. The surgical methods included 4 cases of anterior decompression and clivoaxial fusion. 2 cases of anterior decompression and C1-2 interarticular joint fusion, 1 case of anterior decompression and clivoaxial fusion followed by posterior fusion, and 3 cases of anterior decompression and posterior fusion. In nonreducible atlantoaxial dislocation or ventral cord compression lesion. if the clivoaxial angle was less than 120 degree. the transoral approach was selected. The appropriate surgical approach must be selected according to the degree of compression of the neural tissue involving the craniovertebral junction and atlantoaxial dislocation.